[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.07"]
[Round "9"]
[White "Pacheco, David"]
[Black "Hernandez Sanchez, Jairo Andres"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1926"]
[BlackElo "1814"]
[PlyCount "66"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 Bd7 9. Bxc6 bxc6 10. 0-0 Qe7 11. Re1 0-0 12. c3 f6 13. exf6 Qxf6 14. f3 Nd6 15. Nd2 Rae8 16. Nf1 Nc4 17. b3 Nxe3 18. Nxe3 Qg5 19. Kf2 Qh4+ 20. Kg1 Bd6 21. Nf1 c5 22. Ne2 c6 23. Neg3 Qf6 24. Qd3 Be5 25. Rac1 Bxc3 26. Rxe8 Bd4+ 27. Re3 Bxe3+ 28. Qxe3 d4 29. Qd3 Qg5 30. Qc4+ Kh8 31. Qxc5 Qf4 32. Rd1 Qf7 33. Qxd4 Be6 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.06"]
[Round "8"]
[White "Principe, Gerson"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "D85"]
[BlackElo "1926"]
[PlyCount "87"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 0-0 8. Qd2 c5 9. Nf3 Nc6 10. d5 Qa5 11. Rc1 Ne5 12. Nxe5 Bxe5 13. c4 Qxd2+ 14. Kxd2 b6 15. f4 Bg7 16. Be2 Bd7 17. Bf3 Rad8 18. Ke2 Ba4 19. Kf2 e6 20. Bd1 Bxd1 21. Rhxd1 e5 22. f5 gxf5 23. exf5 f6 24. Kf3 Kf7 25. Ke4 Ke7 26. g4 h6 27. h4 Rg8 28. Rg1 Kf7 29. Rc2 Bf8 30. Rcg2 Re8 31. g5 hxg5 32. hxg5 fxg5 33. Rxg5 Bd6 34. Rg6 Rxg6 35. Rxg6 Bb8 36. d6 Rd8 37. Kxe5 a6 38. Kd5 b5 39. Bxc5 bxc4 40. Kxc4 Rd7 41. Kd5 Rd8 42. Bb6 Rxd6+ 43. Rxd6 Bxd6 44. Kxd6 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "6"]
[White "Ospina, Carl Erik"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C02"]
[BlackElo "1926"]
[PlyCount "89"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Bb5 Bd7 6. f4 Nge7 7. Nf3 Nf5 8. Bxc6 Bxc6 9. 0-0 Be7 10. Re1 Qb6 11. Qb3 Qa6 12. Qc2 0-0 13. Be3 Rac8 14. Qd1 Qb6 15. Qb3 Qa6 16. Qd1 Bb5 17. a4 Bd7 18. Nbd2 Qb6 19. Rb1 Rc7 20. b3 Rfc8 21. Bf2 Qa6 22. Qe2 Qxe2 23. Rxe2 cxd4 24. Bxd4 Nxd4 25. cxd4 b5 26. axb5 Bxb5 27. Ree1 Bb4 28. Re3 Rc2 29. Rd1 Rb2 30. Kf2 Rcc2 31. Ke1 a5 32. g3 h6 33. h3 Kh7 34. g4 g6 35. h4 Kg7 36. g5 h5 37. Re2 Bxe2 38. Kxe2 Bxd2 39. Nxd2 Rxb3 40. Rh1 Rbb2 41. Rd1 a4 42. Ke1 a3 43. Ra1 Rxd2 44. Rxa3 Rh2 45. Rf3 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "7"]
[White "Pacheco, David"]
[Black "Rozo, Paulo"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1926"]
[PlyCount "78"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 Ng4 6. Bxf7+ Kxf7 7. Ng5+ Kg8 8. Qxg4 h6 9. Nf3 d6 10. Qe4 dxe5 11. 0-0 Qf6 12. Nbd2 Qf5 13. Qe2 Be6 14. Re1 Bd6 15. Ne4 Bd5 16. Ng3 Qe6 17. b3 Re8 18. Bb2 Bb4 19. Red1 Qf7 20. Kh1 Bxf3 21. gxf3 a6 22. a3 Bc5 23. Ne4 Be7 24. Rg1 Rf8 25. Rg3 Bh4 26. Rh3 Qe7 27. Rg1 Rf4 28. Bc1 Qe6 29. Qf1 Rxe4 30. fxe4 Bxf2 31. Rg2 Be1 32. Rf3 Bh4 33. Rf8+ Kh7 34. Rxh8+ Kxh8 35. Qf8+ Qg8 36. Qf5 Qh7 37. Qf8+ Qg8 38. Qxg8+ Kxg8 39. Bxh6 Bf6 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "4"]
[White "Leiva Rodriguez, Jeammarco Giuseppe"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "D85"]
[BlackElo "1926"]
[PlyCount "110"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 0-0 8. Bc4 c6 9. Ne2 Nd7 10. 0-0 Nb6 11. Bb3 Qd6 12. Qc2 Be6 13. Bxe6 Qxe6 14. b3 Rfd8 15. Rad1 Rac8 16. Ng3 Rd7 17. f4 Rcd8 18. f5 Qd6 19. fxg6 hxg6 20. e5 Bxe5 21. dxe5 Qc5+ 22. Kh1 Rxd1 23. Rxd1 Rxd1+ 24. Qxd1 Qxc3 25. Qe2 Qa1+ 26. Nf1 Nd5 27. Kg1 Qd4+ 28. Qf2 Qxf2+ 29. Kxf2 Nb4 30. Ke3 Nxa2 31. Nd2 f6 32. exf6 exf6 33. Nc4 Nc1 34. Na5 c5 35. Kd2 b6 36. Nc6 Nxb3+ 37. Kc3 Nd4 38. Nxa7 Kf7 39. Nc8 b5 40. Nd6+ Ke6 41. Ne4 Kd5 42. Nxf6+ Kc6 43. Ng4 Kd6 44. Ne3 Nf5 45. Nf1 Kd5 46. Nd2 b4+ 47. Kd3 Nd6 48. g4 c4+ 49. Kc2 b3+ 50. Kb2 Ne4 51. Nf3 Kc5 52. h4 Kb4 53. h5 c3+ 54. Kc1 b2+ 55. Kc2 Nd2 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "5"]
[White "Pacheco, David"]
[Black "Tapia Huerta, Joel Arthur"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1926"]
[PlyCount "56"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bc4 Bg7 6. 0-0 e6 7. d3 Nge7 8. Bb3 0-0 9. Be3 a6 10. a4 h6 11. Qd2 d5 12. exd5 exd5 13. d4 c4 14. Ba2 Nf5 15. Bf2 Rb8 16. b3 b5 17. axb5 axb5 18. bxc4 bxc4 19. Ne5 Nxe5 20. dxe5 d4 21. Rfd1 Be6 22. Bxd4 Qe7 23. Qf2 Rfc8 24. Ne4 Bf8 25. c3 Rb5 26. Rab1 Ra5 27. Rb2 Qa3 28. Rdb1 Bc5 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.03"]
[Round "3"]
[White "Pacheco, David"]
[Black "Tratz, Leonardo Schmaedeck"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1926"]
[PlyCount "90"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. d3 Nge7 7. 0-0 0-0 8. Be3 b6 9. Qd2 Bb7 10. Rae1 d5 11. Bb3 d4 12. h3 dxe3 13. Qxe3 Nd4 14. Kh1 Nxb3 15. axb3 Nc6 16. Qf2 Nd4 17. Nh2 f5 18. e5 g5 19. Rc1 Kh8 20. Ne2 Nxe2 21. Qxe2 gxf4 22. Rce1 Bh6 23. Nf3 Rg8 24. Qf2 Rg3 25. Qe2 Qe7 26. Rf2 Rag8 27. Rg1 Qg7 28. Qf1 Qg6 29. Kh2 Bg7 30. Nh4 Qh5 31. Nf3 Bxf3 32. Rxf3 Bxe5 33. Qe2 Bd4 34. Rgf1 Rxg2+ 35. Qxg2 Rxg2+ 36. Kxg2 Qg5+ 37. Kh2 Be3 38. c3 Kg7 39. Rxe3 fxe3 40. Rg1 Qxg1+ 41. Kxg1 f4 42. Kg2 Kf6 43. Kf3 e5 44. c4 Kg5 45. b4 cxb4 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "1"]
[White "Pacheco, David"]
[Black "Morimoto, Rafael Shigueo"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1926"]
[PlyCount "74"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 d6 5. Nxd4 Nxd4 6. Qxd4 Nf6 7. 0-0 Be7 8. Nc3 0-0 9. Bf4 Be6 10. Nd5 h6 11. Rfe1 c6 12. Nxe7+ Qxe7 13. Bxd6 Qd7 14. Bxe6 fxe6 15. Rad1 Rfd8 16. c4 b6 17. b4 Rab8 18. e5 Ne8 19. Qg4 Rb7 20. h3 Qf7 21. Re3 Nxd6 22. exd6 Re8 23. Rde1 Rf8 24. f3 e5 25. Rxe5 Rd7 26. Re7 Rxe7 27. Rxe7 Qf6 28. Rxa7 Rf7 29. Rxf7 Qxf7 30. d7 Qe7 31. f4 Kf8 32. Qf5+ Kg8 33. Kh2 c5 34. Qd5+ Kh8 35. d8Q+ Qxd8 36. Qxd8+ Kh7 37. bxc5 bxc5 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "2"]
[White "Restrepo Sierra, Luis Arley"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1926"]
[PlyCount "78"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Nf6 6. 0-0 0-0 7. Bg5 Nbd7 8. Nc3 c6 9. Re1 h6 10. Bh4 Re8 11. Rxe8+ Qxe8 12. Ne2 Ne4 13. Nd2 Ndf6 14. Bxe4 Nxe4 15. Nxe4 Qxe4 16. Bg3 Bxg3 17. Nxg3 Qg6 18. c3 Bd7 19. Qb1 Qf6 20. Qe1 Re8 21. Qd2 Qe7 22. Kf1 c5 23. a4 b6 24. dxc5 Qxc5 25. Rd1 Bxa4 26. Ra1 Bb5+ 27. Kg1 a5 28. Re1 Qc6 29. Nf5 Rxe1+ 30. Qxe1 Qd7 31. Qe5 f6 32. Qxd5+ Kh7 33. Qxd7 Bxd7 34. Nd6 b5 35. c4 b4 36. Ne4 a4 37. Kf1 a3 38. bxa3 bxa3 39. Nd2 Ba4 0-1

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "1"]
[White "Guberek, Allan"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C50"]
[BlackElo "1913"]
[PlyCount "26"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. Nc3 d6 6. d3 Bg4 7. Bg5 Nd4 8. h3 Nxf3+ 9. gxf3 Bxh3 10. Re1 h6 11. Bxf6 Qxf6 12. Kh2 Qh4 13. Rg1 Bf1# 0-1

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "5"]
[White "Gutierrez, Jesus"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "C01"]
[BlackElo "1913"]
[PlyCount "78"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 h6 6. h3 Nf6 7. 0-0 0-0 8. Bf4 Be6 9. c3 c6 10. Bxd6 Qxd6 11. Ng3 Nbd7 12. Nd2 c5 13. dxc5 Nxc5 14. Bc2 Qc6 15. Nf3 Nfe4 16. Nd4 Qd7 17. Nxe4 Nxe4 18. Qd3 g6 19. Rad1 Rad8 20. Qe3 Qe7 21. Bxe4 dxe4 22. Qxe4 Kg7 23. Nxe6+ fxe6 24. Qe3 a6 25. Rd4 Rxd4 26. Qxd4+ Qf6 27. Qxf6+ Kxf6 28. Rd1 Ke7 29. f3 Rf5 30. Kf2 Ra5 31. a3 Rc5 32. Rd4 b5 33. f4 h5 34. g3 a5 35. Kf3 Kf6 36. Rd7 Rc4 37. Rb7 Rc5 38. g4 hxg4+ 39. hxg4 g5 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "3"]
[White "Karp, Justin"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C10"]
[BlackElo "1913"]
[PlyCount "40"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. Nf3 Nd7 7. c3 Nb6 8. Bd3 Bd7 9. 0-0 Bc6 10. Re1 Bd6 11. Be3 Nd5 12. c4 Nxe3 13. Rxe3 Bf4 14. Re1 Qd6 15. Be4 0-0-0 16. Bxc6 Qxc6 17. b3 Rhg8 18. Kh1 Rg7 19. g3 Bd6 20. d5 Qb6 0-1

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "7"]
[White "Martinez Romero, Martin"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "B22"]
[BlackElo "1913"]
[PlyCount "95"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 Qd8 6. c3 Nf6 7. Bc4 Nc6 8. Nb3 cxd4 9. Nbxd4 Nxd4 10. Nxd4 Bc5 11. Be3 Bb6 12. 0-0 0-0 13. Qf3 e5 14. Nc2 Qc7 15. Bb3 e4 16. Bxb6 Qxb6 17. Qg3 Bf5 18. Rad1 Rad8 19. Ne3 Be6 20. Bxe6 Qxe6 21. Qc7 Rd7 22. Rxd7 Qxd7 23. Qxd7 Nxd7 24. Rd1 Nf6 25. Rd4 g6 26. Kf1 Re8 27. Ke2 Kf8 28. h3 Nh5 29. g3 f5 30. Rd7 Re7 31. Rxe7 Kxe7 32. Nd5+ Kd6 33. Nf4 Nxf4+ 34. gxf4 h6 35. h4 Ke6 36. c4 Kf6 37. b4 g5 38. fxg5+ hxg5 39. h5 g4 40. c5 a6 41. a4 Kg5 42. b5 axb5 43. axb5 Kxh5 44. c6 bxc6 45. bxc6 g3 46. fxg3 Kg4 47. c7 Kxg3 48. c8Q 1-0

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "4"]
[White "Pacheco, David"]
[Black "Blandon Villa, Diego F"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "1913"]
[PlyCount "54"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Bc5 10. Be3 0-0 11. Nd2 Nxd2 12. Qxd2 f6 13. exf6 Qxf6 14. c3 Bd6 15. Bg5 Qg6 16. f4 Rae8 17. Bh4 Qg4 18. Bg3 Re4 19. Rf3 Bxf4 20. Qf2 Rf7 21. Bxf4 Rexf4 22. Rf1 g5 23. Qe3 c5 24. Nc2 Rxf3 25. Rxf3 Rxf3 26. Qxf3 Qxf3 27. gxf3 d4 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "2"]
[White "Pacheco, David"]
[Black "Escobar Barona, Juan Fernando"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1913"]
[PlyCount "69"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. Bb2 Nf6 6. d3 Nc6 7. Nf3 e6 8. Nc3 Be7 9. Qd2 a6 10. a4 0-0 11. 0-0 Rfd8 12. Rfe1 Qc7 13. Qe2 d5 14. exd5 exd5 15. h3 Re8 16. Qd2 Rad8 17. Re2 d4 18. Ne4 Nxe4 19. Rxe4 b5 20. Rae1 bxa4 21. bxa4 Qd7 22. Qe2 Kf8 23. Ne5 Nxe5 24. Rxe5 Bd6 25. Rxe8+ Qxe8 26. Qxe8+ Rxe8 27. Rxe8+ Kxe8 28. Kf1 Kd7 29. Ke2 Kc6 30. c3 Be5 31. Kd2 Kb6 32. cxd4 Bxd4 33. Bxd4 cxd4 34. Kc2 Ka5 35. Kb3 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Cuenca"]
[Date "2006.08.??"]
[Round "6"]
[White "Pacheco, David"]
[Black "Espinoza, Renzo"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1913"]
[PlyCount "72"]
[EventDate "2006.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. dxe5 Bb4 6. Bd2 Nc6 7. Nf3 Bg4 8. a3 Nd4 9. Be2 Bxf3 10. gxf3 0-0-0 11. f4 Bxc3 12. bxc3 Nxe2 13. Qxe2 Qd5 14. Rg1 g6 15. Be3 Qc6 16. Bd2 Nh6 17. Rb1 b6 18. Rb4 Rd7 19. Qa6+ Qb7 20. Qxb7+ Kxb7 21. Rd4 Rhd8 22. Be3 Nf5 23. Rxd7 Rxd7 24. Ke2 c5 25. Rd1 Rxd1 26. Kxd1 c4 27. Ke2 Nh4 28. Bc1 Kc6 29. a4 a6 30. Be3 Kd5 31. f3 h5 32. Bd2 Nf5 33. Be1 b5 34. axb5 axb5 35. Kd2 Kc6 36. h4 Kd7 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Balneario Camboriu"]
[Date "2005.06.17"]
[Round "9"]
[White "Pacheco, David"]
[Black "Escobar Barona, Juan Fernando"]
[Result "1/2-1/2"]
[ECO "B20"]
[BlackElo "1450"]
[PlyCount "77"]
[EventDate "2005.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Bb5 Bd7 5. Bxc6 Bxc6 6. d3 e6 7. Nf3 Nf6 8. 0-0 Be7 9. Nbd2 b5 10. Re1 e5 11. c4 b4 12. a3 a5 13. Qe2 Qc7 14. axb4 axb4 15. Rxa8+ Bxa8 16. Ra1 0-0 17. Nf1 Rd8 18. Ne3 Bc6 19. Nf5 Ne8 20. Qd1 g6 21. Ne3 Ng7 22. Ra2 Ne6 23. Qa1 Nf4 24. Nd5 Bxd5 25. exd5 Qc8 26. Qf1 Qf5 27. Ne1 Bf6 28. Bc1 Kg7 29. Bxf4 Qxf4 30. Nf3 Re8 31. h3 e4 32. dxe4 Qxe4 33. Nd2 Qd4 34. Nf3 Qc3 35. Qd1 h6 36. Ra6 Be5 37. Ra2 Bf4 38. Kf1 Re7 39. Qa1 1/2-1/2

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.16"]
[Round "6"]
[White "Calderon, Walter"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "44"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 Bd7 4. Nc3 Ne7 5. Be2 Ng6 6. 0-0 Be7 7. d3 c5 8. Be3 d4 9. Bxd4 cxd4 10. Nxd4 Nxe5 11. Re1 Nbc6 12. Nxc6 Nxc6 13. d4 0-0 14. Bd3 Bf6 15. Ne4 Bxd4 16. Qh5 h6 17. h4 f5 18. Nd6 Qb6 19. Rf1 Na5 20. Rad1 Qxd6 21. Be2 Be8 22. Qxe8 Raxe8 0-1

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.16"]
[Round "7"]
[White "Pacheco, David"]
[Black "Andrade, Jaime"]
[Result "1/2-1/2"]
[ECO "B20"]
[PlyCount "58"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 d5 3. exd5 Qxd5 4. Bb2 Nf6 5. Nc3 Qd8 6. Nf3 e6 7. Bb5+ Nbd7 8. 0-0 Qc7 9. h3 Bd6 10. Re1 a6 11. Bxd7+ Bxd7 12. Ne4 Nxe4 13. Rxe4 0-0-0 14. d4 Kb8 15. Qe1 Bc6 16. Re3 Rhg8 17. dxc5 Bxc5 18. Be5 Bd6 19. c4 Bxf3 20. Bxd6 Rxd6 21. Rxf3 Rgd8 22. Rc3 g6 23. Rcc1 Rd2 24. Rd1 Qd7 25. Rxd2 Qxd2 26. Kf1 Qb2 27. Rd1 Rxd1 28. Qxd1 Qxa2 29. Qd8+ Ka7 1/2-1/2

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.15"]
[Round "4"]
[White "Garzon Rivera, Ricardo"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2000"]
[PlyCount "49"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nf6 5. Bg5 Be7 6. Nc3 c6 7. Nf3 0-0 8. Qd2 Be6 9. 0-0-0 b5 10. Ne5 a5 11. Ne2 Qb6 12. Nf4 b4 13. Nxe6 fxe6 14. Bxf6 Bxf6 15. Rhf1 Bxe5 16. dxe5 Nd7 17. Rde1 a4 18. Qe3 Qb7 19. Qh3 h6 20. Qxe6+ Rf7 21. Bh7+ Kf8 22. Qd6+ Re7 23. Re3 Nb6 24. Rf3+ Ke8 25. Bg6+ 1-0

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.15"]
[Round "5"]
[White "Pacheco, David"]
[Black "Guerrero, Pablo"]
[Result "1/2-1/2"]
[ECO "B20"]
[PlyCount "42"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 Nf6 4. Nc3 e6 5. a4 d6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. d3 e5 9. Nge2 g6 10. 0-0 Bg7 11. Rb1 Qd7 12. Qd2 0-0 13. f4 exf4 14. Nxf4 Bh6 15. Qe2 Bg7 16. Ncd5 Bxd5 17. Bxf6 Bxf6 18. Nxd5 Bg7 19. Rf4 Kh8 20. Rbf1 Rac8 21. Qf3 Kg8 1/2-1/2

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.14"]
[Round "2"]
[White "Calderon, Pablo"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "58"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Be3 Nf6 5. Bd3 Be7 6. Nf3 0-0 7. Nbd2 Re8 8. 0-0 Nbd7 9. c3 Nf8 10. Re1 c6 11. Ne5 Bd6 12. Bf4 Qc7 13. Qc2 Nh5 14. Bg3 Nxg3 15. hxg3 Bxe5 16. dxe5 Rxe5 17. Rxe5 Qxe5 18. Nf3 Qf6 19. Re1 Bd7 20. b4 b5 21. Nd4 h6 22. Nb3 Ne6 23. Qd2 Ng5 24. Qc2 Ne6 25. Bf5 Nf8 26. Bxd7 Nxd7 27. a3 g6 28. Rd1 Nb6 29. Nd4 Na4 1/2-1/2

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.14"]
[Round "3"]
[White "Pacheco, David"]
[Black "Godoy, Alex"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "53"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. Bb2 Ngf6 6. d3 e5 7. Ne2 Be7 8. 0-0 0-0 9. Nbc3 Nb6 10. f4 g6 11. f5 d5 12. exd5 Nbxd5 13. Nxd5 Nxd5 14. Rf3 Bg5 15. fxg6 fxg6 16. Rxf8+ Qxf8 17. Ng3 Qe7 18. Qe2 Be3+ 19. Kh1 Bd4 20. Bxd4 exd4 21. Qxe7 Nxe7 22. Re1 Re8 23. Ne4 Nf5 24. Nf6+ Kf7 25. Nxe8 Ne3 26. Nd6+ Ke6 27. Nc4 1-0

[Event "ECU-ch U13"]
[Site "Loja"]
[Date "2005.04.13"]
[Round "1"]
[White "Pacheco, David"]
[Black "Vasconez Navas, Juan Diego"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "1877"]
[PlyCount "75"]
[EventDate "2005.04.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 e6 4. Nf3 d6 5. Bb5 Bd7 6. d3 a6 7. Bxc6 Bxc6 8. Nc3 Nf6 9. 0-0 Be7 10. a4 0-0 11. Nd2 Qc7 12. f4 b5 13. Rf3 Qb6 14. Kh1 Ng4 15. h3 Nf6 16. Rg3 Qc7 17. Nf1 Rfb8 18. Nh2 Kh8 19. Ng4 Nh5 20. Rf3 f5 21. Ne3 bxa4 22. Nxa4 fxe4 23. dxe4 Bxe4 24. Rf2 Nf6 25. Rd2 Rd8 26. Nc4 Qc6 27. Na5 Qc7 28. Nc4 Bd5 29. Ncb6 Rdb8 30. Nxd5 Nxd5 31. Qg4 Bf8 32. Qxe6 Nxf4 33. Qc4 d5 34. Qf1 c4 35. Re1 Ng6 36. bxc4 Qxc4 37. Qxc4 dxc4 38. Red1 0-1

[Event "Pan American-ch U10"]
[Site "Balneario Camboriu"]
[Date "2005.??.??"]
[Round "?"]
[White "Pacheco, David"]
[Black "Cori, Jorge Moise"]
[Result "0-1"]
[ECO "B20"]
[BlackElo "2063"]
[PlyCount "66"]
[EventDate "2005.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. e4 c5 2. b3 e5 3. Bb2 Nc6 4. Nc3 Nge7 5. Nge2 g6 6. Ng3 Bg7 7. Be2 0-0 8. 0-0 a6 9. a4 d6 10. Kh1 f5 11. exf5 gxf5 12. f4 e4 13. Rb1 d5 14. Bh5 d4 15. Nce2 b5 16. d3 e3 17. c3 Be6 18. Bf3 Rb8 19. cxd4 cxd4 20. axb5 axb5 21. Ra1 Qb6 22. Ba3 b4 23. Bb2 Nd5 24. Qc2 Nc3 25. Nh5 Bh8 26. Rg1 Na5 27. g4 Bxb3 28. gxf5+ Kf7 29. Qc1 Nxe2 30. Bxe2 Bd5+ 31. Rg2 Nb3 32. Ra6 Nxc1 33. Rxb6 Rxb6 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.29"]
[Round "9"]
[White "Lozano, Gonzalo"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "C06"]
[PlyCount "51"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 cxd4 9. cxd4 Bb4+ 10. Bd2 Be7 11. 0-0 0-0 12. Qc2 h6 13. a3 f6 14. exf6 Bxf6 15. Be3 Re8 16. b4 a6 17. Rab1 Na7 18. a4 Nf8 19. a5 Qc6 20. Qxc6 bxc6 21. Rfc1 Nd7 22. h3 e5 23. dxe5 Nxe5 24. Nxe5 Bxe5 25. Bxa7 Rxa7 26. Rxc6 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.28"]
[Round "7"]
[White "Fiora, Emilio"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "D00"]
[PlyCount "58"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 e6 2. c3 d5 3. e3 Bd6 4. Bd3 Nf6 5. Nd2 0-0 6. f4 Bd7 7. Ngf3 c5 8. Ne5 c4 9. Bc2 h6 10. 0-0 Nh7 11. Rf3 f5 12. Rg3 Bxe5 13. fxe5 Qe7 14. Qh5 Kh8 15. b3 cxb3 16. Nxb3 b6 17. a4 Qf7 18. Qxf7 Rxf7 19. Ba3 Bxa4 20. Bd6 Bc6 21. Bd3 Ng5 22. Nd2 Ne4 23. Nxe4 fxe4 24. Be2 a5 25. Bh5 Rfa7 26. Bg6 Na6 27. Rg4 Be8 28. Bxe8 Rxe8 29. Rf4 Rc8 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.27"]
[Round "5"]
[White "Abdalla, Jose Lucas Aurelli"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "C00"]
[PlyCount "54"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nc6 4. Ngf3 d4 5. g3 e5 6. Bg2 Nf6 7. 0-0 Bd6 8. Re1 0-0 9. Qe2 Be6 10. Nf1 h6 11. a3 Nh7 12. Bd2 f5 13. c3 dxc3 14. Bxc3 f4 15. Rad1 fxg3 16. Nxg3 Bg4 17. Qe3 Qf6 18. Nf5 Bxf5 19. exf5 Qxf5 20. d4 exd4 21. Nxd4 Nxd4 22. Bxd4 Rae8 23. Qc3 Qf7 24. Bxb7 Kh8 25. Bd5 Qg6+ 26. Kh1 Nf6 27. Bg2 Ne4 1/2-1/2

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.27"]
[Round "6"]
[White "Pacheco, David"]
[Black "Balbachan, Eric Steven"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "38"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 Nxc3 5. bxc3 Nc6 6. h3 Bf5 7. Nf3 e5 8. 0-0 Bd6 9. d3 Qd7 10. Nh2 0-0-0 11. Be3 Qe7 12. Qf3 Be6 13. Bb5 Bd7 14. d4 a6 15. Bc4 f5 16. Rab1 f4 17. dxe5 Qxe5 18. Bxf4 Qxf4 19. Qxf4 Bxf4 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.26"]
[Round "3"]
[White "Cordoba, Vicente"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "67"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 Bd7 7. Bc2 cxd4 8. cxd4 Bb4+ 9. Nc3 Nge7 10. a3 Bxc3+ 11. bxc3 f6 12. exf6 gxf6 13. Rb1 Qc7 14. 0-0 0-0-0 15. Qe2 f5 16. Ng5 Rdf8 17. Nxe6 Bxe6 18. Qxe6+ Kb8 19. Qh6 Ka8 20. Bf4 Qc8 21. Rb2 Na5 22. Rfb1 b6 23. Rb5 Qxc3 24. Bd6 Re8 25. Bxe7 Rxe7 26. h3 Qxc2 27. Qd6 Rhe8 28. Qxd5+ Qc6 29. Rxa5 Qxd5 30. Rxd5 Re4 31. Rxf5 Rxd4 32. Rf7 Rd3 33. Rxh7 Rxa3 34. g4 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.26"]
[Round "4"]
[White "Pacheco, David"]
[Black "Canahuiri, Joseph"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "64"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. b3 e5 3. Bb2 Nc6 4. Nc3 Nf6 5. h3 g6 6. Bc4 Nxe4 7. Bxf7+ Kxf7 8. Nxe4 d5 9. Ng3 Bg7 10. N1e2 Rf8 11. 0-0 Kg8 12. d3 d4 13. Ne4 Qe7 14. a4 Bf5 15. N2g3 Rf7 16. Ba3 b6 17. a5 Nxa5 18. Bxc5 Qh4 19. Bb4 Nc6 20. Bd2 h6 21. Qe2 Raf8 22. b4 Nd8 23. Ra2 Ne6 24. Rfa1 Bxh3 25. gxh3 Rxf2 26. Nxf2 Qxg3+ 27. Kf1 Qh2 28. Ke1 Bf6 29. Qg4 Qxf2+ 30. Kxf2 Bh4+ 31. Kg1 Ng5 32. Bxg5 Rf5 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.24"]
[Round "1"]
[White "Carrera Du Bois, Alhan Enhok"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "126"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 Qb6 6. Be2 cxd4 7. cxd4 Nge7 8. b3 Nf5 9. Bb2 Bb4+ 10. Kf1 Be7 11. g3 0-0 12. Kg2 f6 13. g4 Nh6 14. h3 fxe5 15. dxe5 Nf7 16. Rf1 Qc7 17. Qd2 Ncxe5 18. Rc1 Qb8 19. Qd4 Bf6 20. Qf4 Nxf3 21. Qxb8 Ne1+ 22. Rxe1 Rxb8 23. Bxf6 gxf6 24. Nc3 Bd7 25. Bb5 Bc8 26. f4 a6 27. Bd3 Rd8 28. f5 e5 29. Rad1 b5 30. Be2 d4 31. Ne4 Kg7 32. h4 Bb7 33. Kf3 Bxe4+ 34. Kxe4 Rbc8 35. a4 Nd6+ 36. Kf3 Rc3+ 37. Kg2 Rxb3 38. axb5 axb5 39. Rd3 Rc3 40. Rf3 h6 41. Ra1 Rb8 42. Ra7+ Kg8 43. g5 hxg5 44. hxg5 fxg5 45. f6 Rxf3 46. Bxf3 b4 47. Bd5+ Kh8 48. Rd7 Rb6 49. f7 Nxf7 50. Rxf7 b3 51. Rf1 b2 52. Rb1 Kg7 53. Kf3 Kf6 54. Ke4 g4 55. Ba2 g3 56. Rf1+ Kg5 57. Kf3 d3 58. Kxg3 e4 59. Bb1 Rb3 60. Kg2 Rc3 61. Ba2 Rc1 62. Rf2 b1Q 63. Bxb1 Rxb1 0-1

[Event "ECU-ch U19"]
[Site "Loja"]
[Date "2004.07.09"]
[Round "4"]
[White "Pacheco, David"]
[Black "Guerrero, Ivan"]
[Result "0-1"]
[ECO "C56"]
[BlackElo "2196"]
[PlyCount "62"]
[EventDate "2004.07.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Bc5 10. Be3 Bb6 11. Nd2 c5 12. Ne2 Nxd2 13. Qxd2 Bc6 14. Ng3 d4 15. Bf4 Qd5 16. f3 0-0-0 17. a4 a5 18. Nf5 Qe6 19. Nxg7 Qg6 20. Bg5 Qxg7 21. Bxd8 Rxd8 22. f4 Rg8 23. g3 Qg4 24. Kf2 Qf3+ 25. Ke1 Qe4+ 26. Kf2 c4 27. Rg1 d3+ 28. Kf1 Qf3+ 29. Ke1 Bxg1 30. cxd3 cxd3 31. Rc1 Be4 0-1

[Event "ECU-ch U19"]
[Site "Loja"]
[Date "2004.07.08"]
[Round "3"]
[White "Pacheco, David"]
[Black "Restrepo, Miguel"]
[Result "1-0"]
[ECO "B50"]
[BlackElo "1910"]
[PlyCount "96"]
[EventDate "2004.07.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Nc3 e6 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Nf3 Be7 8. 0-0 0-0 9. d4 cxd4 10. Nxd4 Qc7 11. Ndb5 Qc5 12. a4 a6 13. Nd4 d5 14. exd5 Nxd5 15. Nxd5 Qxd5 16. Nf3 Nf6 17. Qxd5 Nxd5 18. Rad1 b5 19. axb5 axb5 20. Ra1 Rfc8 21. Rxa8 Rxa8 22. Ra1 Rxa1+ 23. Bxa1 b4 24. Ne5 Bd6 25. Nc4 Bc5 26. Be5 f6 27. Bd6 Bd4 28. Kf1 e5 29. g3 e4 30. Ke2 Kf7 31. Ne3 Ke6 32. Nxd5 Kxd5 33. Bxb4 f5 34. h4 h6 35. c4+ Kc6 36. Be1 g5 37. hxg5 hxg5 38. Bd2 Bf6 39. Kd1 Kc5 40. Kc2 Bd4 41. Be3 f4 42. Bxd4+ Kxd4 43. gxf4 gxf4 44. Kd2 f3 45. Ke1 Kc5 46. Kd1 Kd4 47. Kd2 e3+ 48. fxe3+ Ke4 1-0

[Event "ECU-ch U19"]
[Site "Loja"]
[Date "2004.07.08"]
[Round "2"]
[White "Robles, Mauro"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "219"]
[PlyCount "54"]
[EventDate "2004.07.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 5. Be2 Bb4 6. Nf3 0-0 7. Be3 Nc6 8. a3 Ba5 9. 0-0 Be6 10. b4 Bb6 11. Qd2 Ne4 12. Nxe4 dxe4 13. Ne5 Nxe5 14. dxe5 Qxd2 15. Bxd2 Rad8 16. Bc3 h6 17. Rad1 e3 18. f4 Bc4 19. Rde1 Bxe2 20. Rxe2 Rd7 21. Bb2 Rd2 22. Rfe1 Rxe2 23. Rxe2 Rd8 24. Kf1 Rd1+ 25. Re1 Rd2 26. Re2 Rd1+ 27. Re1 Rd2 1/2-1/2

[Event "ECU-ch U19"]
[Site "Loja"]
[Date "2004.07.07"]
[Round "1"]
[White "Pacheco, David"]
[Black "Vacacela, Diego"]
[Result "0-1"]
[ECO "C50"]
[BlackElo "1982"]
[PlyCount "92"]
[EventDate "2004.07.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 h6 5. Nxd4 Ne5 6. Bb3 Bc5 7. Nc3 d6 8. Be3 Nf6 9. h3 Bb4 10. Nde2 Nxe4 11. Qd5 Bxc3+ 12. Nxc3 Nf6 13. Qd2 0-0 14. 0-0 Nh7 15. f4 Nc6 16. Rf3 Nf6 17. Re1 a6 18. Bf2 Nd7 19. Rg3 Nf6 20. Rf3 Bf5 21. Bh4 Ne4 22. Nxe4 Qxh4 23. Nc3 Nd4 24. Rf2 Nxb3 25. cxb3 Rae8 26. Rfe2 Rxe2 27. Rxe2 Be6 28. Nd5 Bxd5 29. Qxd5 Rb8 30. Qc4 c6 31. Qd4 Qd8 32. Rd2 d5 33. Kh1 Qd6 34. Rc2 Re8 35. Qd2 c5 36. Qf2 d4 37. Rd2 Re4 38. g3 Qe6 39. Kh2 d3 40. Kg2 b5 41. Kf1 Qxh3+ 42. Kg1 Qe6 43. Kf1 Re3 44. f5 Qe4 45. Kg1 Re1+ 46. Kh2 Rh1# 0-1

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.20"]
[Round "7"]
[White "Pacheco, David"]
[Black "Yunda, Juan Pablo"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "77"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 Qe7 6. 0-0 Qc5 7. Bxf7+ Kxf7 8. exf6 g6 9. Re1 Bd6 10. Bh6 Rd8 11. Ng5+ Kxf6 12. Nxh7+ Kf7 13. Qf3+ Qf5 14. Qxf5+ gxf5 15. Bg5 Rh8 16. Nf6 b6 17. h3 Kg6 18. f4 Nb4 19. Re2 Ba6 20. Rd2 Bxf4 21. Bxf4 Kxf6 22. a3 Nc6 23. Bxc7 Rag8 24. Rf2 Rxh3 25. Nd2 Bb7 26. Raf1 Ne7 27. Nf3 Ba6 28. Re1 Nd5 29. Be5+ Kf7 30. Nxd4 Ne7 31. Bd6 Rh4 32. Rxe7+ Kf6 33. Nxf5 Rgh8 34. Nxh4+ Kg5 35. Nf3+ Kh5 36. Re4 Kg6 37. Nh4+ Kh6 38. Bf8+ Kg5 39. Rf5# 1-0

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.20"]
[Round "6"]
[White "Pacheco, Josue"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "99"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. d3 h6 6. 0-0 d6 7. h3 Be6 8. Nd5 0-0 9. Be3 Bb6 10. Bb3 Na5 11. c4 Nxb3 12. Qxb3 c5 13. Nh2 Bxd5 14. cxd5 Nh5 15. Qd1 Nf4 16. Qg4 Qf6 17. Nf3 Bd8 18. Bxf4 Qxf4 19. Qxf4 exf4 20. d4 cxd4 21. Nxd4 Bf6 22. Nf5 Rad8 23. Rfd1 b6 24. Rab1 Rfe8 25. f3 Kh7 26. b3 g6 27. Nd4 Bxd4+ 28. Rxd4 Rc8 29. Rb2 a6 30. Ra4 Ra8 31. Rc2 b5 32. Ra5 Rec8 33. Rxc8 Rxc8 34. Rxa6 Rc2 35. Rxd6 Rxa2 36. Rb6 Kg7 37. Rxb5 Kf6 38. b4 Ke5 39. Rb7 f6 40. Re7+ Kd4 41. d6 Ra8 42. Re6 Kc4 43. Rxf6 Kxb4 44. Rxg6 Rd8 45. Rxh6 Kc5 46. Kf2 Rxd6 47. Rxd6 Kxd6 48. g3 Ke5 49. gxf4+ Kxf4 50. h4 1-0

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.19"]
[Round "5"]
[White "Bauer, Cristian"]
[Black "Pacheco, David"]
[Result "1/2-1/2"]
[ECO "B33"]
[PlyCount "76"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Bc4 e5 6. Nxc6 dxc6 7. Qxd8+ Kxd8 8. Nc3 Ke8 9. Be3 Bb4 10. Bd3 Be6 11. Bd2 Rd8 12. b3 Ke7 13. Nb1 Bxd2+ 14. Nxd2 b5 15. Nf3 Nd7 16. Rc1 f6 17. c4 bxc4 18. Bxc4 Nc5 19. Bxe6 Nd3+ 20. Ke2 Nxc1+ 21. Rxc1 Kxe6 22. Rxc6+ Rd6 23. Rc7 Ra6 24. Rc2 h6 25. h3 g5 26. g3 f5 27. exf5+ Kxf5 28. g4+ Ke6 29. Ke3 Kf6 30. Ke2 h5 31. gxh5 Rxh5 32. Ng1 Kf5 33. Kf3 Rhh6 34. Kg3 Ra3 35. Nf3 Rha6 36. Rc5 R6a5 37. Rc7 e4 38. Nd4+ Kf6 1/2-1/2

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.19"]
[Round "4"]
[White "Pacheco, David"]
[Black "Ricaurte Macancela, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "C02"]
[BlackElo "1976"]
[PlyCount "77"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 Nc6 5. a3 Qb6 6. c3 Bd7 7. b4 cxd4 8. cxd4 a6 9. Be2 Nge7 10. Be3 Nf5 11. Nc3 Nxe3 12. fxe3 Nxb4 13. 0-0 Nc6 14. Ng5 Nd8 15. Bd3 h6 16. Qh5 Qc7 17. Nxf7 Nxf7 18. Qxf7+ Kd8 19. Ne2 Bc8 20. Qxc7+ Kxc7 21. Rf7+ Kd8 22. e4 dxe4 23. Bxe4 Rb8 24. Rb1 b5 25. Rb3 a5 26. a4 Ba6 27. Nf4 Rb6 28. Ng6 Rg8 29. Rxf8+ Rxf8 30. Nxf8 Ke8 31. Ng6 b4 32. Bd3 Bb7 33. Bb5+ Kf7 34. Nf4 Be4 35. Bd3 Bc6 36. Bb5 Bxb5 37. axb5 Rxb5 38. Nd3 Rd5 39. Nxb4 1/2-1/2

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.18"]
[Round "3"]
[White "Gualpa, Galo"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "71"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 d6 4. Nc3 e6 5. d3 Be7 6. Be3 Bd7 7. 0-0 Nf6 8. d4 cxd4 9. Bxd4 0-0 10. e5 Nxd4 11. exf6 Nxf3+ 12. Qxf3 Bxf6 13. Rab1 Bc6 14. Qe2 Qc7 15. Nb5 Bxb5 16. Bxb5 a6 17. Bd3 d5 18. h3 e5 19. c3 e4 20. Bc2 Rfe8 21. Qh5 Re5 22. Qe2 Rg5 23. f3 exf3 24. Rxf3 Rg3 25. Re1 Kf8 26. Re3 Rxe3 27. Qxe3 Be7 28. Qd3 g6 29. Qd4 Bc5 30. Kh1 Bxd4 31. cxd4 Qxc2 32. Rf1 Re8 33. Rg1 Qd2 34. a4 Re1 35. Rxe1 Qxe1+ 36. Kh2 0-1

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.18"]
[Round "2"]
[White "Pacheco, David"]
[Black "Urgiles, Paul"]
[Result "1-0"]
[ECO "B71"]
[PlyCount "43"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Bg4 7. Qd2 Bg7 8. e5 dxe5 9. fxe5 Nfd7 10. Qf4 Bh5 11. e6 Nf6 12. exf7+ Kxf7 13. Bc4+ Kf8 14. Ne6+ Ke8 15. Nxd8 Kxd8 16. 0-0 Nbd7 17. Be6 Nc5 18. Qd4+ Ncd7 19. Rxf6 Kc7 20. Qxd7+ Kb6 21. Be3+ Ka5 22. Qb5# 1-0

[Event "ECU-ch U11"]
[Site "Azoguez"]
[Date "2004.03.17"]
[Round "1"]
[White "Brando, Rino"]
[Black "Pacheco, David"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "58"]
[EventDate "2004.03.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ECU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 h6 6. Be3 Bb6 7. Qe2 d6 8. 0-0-0 a5 9. d4 exd4 10. Bxd4 Bxd4 11. Nxd4 Ne5 12. h3 Bd7 13. Bb5 c6 14. Ba4 b5 15. Ndxb5 cxb5 16. Bxb5 Bxb5 17. Qxb5+ Qd7 18. Rd2 Rd8 19. Qxa5 Nc4 20. Qb4 Nxd2 21. Kxd2 0-0 22. Kc1 Rb8 23. Qc4 Rfe8 24. Rd1 Qb7 25. b3 Nxe4 26. Nxe4 Qxe4 27. Qc7 Rec8 28. f3 Qg6 29. Rxd6 Rxc7 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2003.06.10"]
[Round "3"]
[White "Fuentes Flores, Fernando Ramon"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "61"]
[EventDate "2003.06.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 Be7 4. Bc4 Nf6 5. d3 Nc6 6. Be3 0-0 7. 0-0 Bg4 8. h3 Bh5 9. d4 exd4 10. Bxd4 Nxd4 11. Qxd4 Bxf3 12. gxf3 Qd7 13. Kh2 Nh5 14. e5 Qf5 15. Rfe1 Qxf3 16. Be2 Qf5 17. exd6 Bxd6+ 18. Kg1 Bc5 19. Qh4 Nf4 20. Bg4 Qg6 21. Kf1 f5 22. Bf3 Rfe8 23. Qxf4 Rxe1+ 24. Rxe1 Re8 25. Rxe8+ Qxe8 26. Qc4+ Kh8 27. Qxc5 h6 28. Qxf5 Qe7 29. Qc8+ Kh7 30. Nd5 Qf7 31. Be4+ 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2003.06.09"]
[Round "2"]
[White "Cormacho, Juan"]
[Black "Pacheco, David"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "47"]
[EventDate "2003.06.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e5 4. Nf3 Nf6 5. Bc4 d6 6. fxe5 dxe5 7. Ng5 Bg4 8. Nf3 Nd4 9. Be2 Bd6 10. d3 h6 11. Nxd4 Bxe2 12. Ndxe2 0-0 13. 0-0 Qd7 14. Ng3 Qg4 15. Qxg4 Nxg4 16. Nf5 Bc7 17. h3 Nf6 18. Nxh6+ gxh6 19. Rxf6 Bd8 20. Rxh6 Kg7 21. Rh5 Bb6 22. Be3 Kg6 23. Rxe5 f5 24. Rxf5 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2003.06.??"]
[Round "7"]
[White "Pacheco, David"]
[Black "Sabogal, Brodin"]
[Result "1/2-1/2"]
[ECO "C44"]
[PlyCount "56"]
[EventDate "2003.06.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 f6 4. d5 Nb4 5. a3 Na6 6. Be3 Bc5 7. Bd3 Bxe3 8. fxe3 d6 9. h3 Bd7 10. Nc3 Nc5 11. 0-0 Nxd3 12. cxd3 Qe7 13. Qc2 0-0-0 14. Rac1 h5 15. Ne2 Be8 16. b4 g5 17. Qd2 g4 18. Nh2 gxh3 19. gxh3 Qg7+ 20. Kh1 Ne7 21. Qc2 c6 22. dxc6 bxc6 23. b5 Rg8 24. Rg1 Qh7 25. Qa4 Rxg1+ 26. Nxg1 Rd7 27. bxc6 Rc7 28. Qa6+ Kd8 1/2-1/2

